Messages in this thread | | | Date | Fri, 11 Sep 2015 16:13:08 -0700 | Subject | Re: [PATCH] fs-writeback: drop wb->list_lock during blk_finish_plug() | From | Linus Torvalds <> |
| |
On Fri, Sep 11, 2015 at 4:06 PM, Chris Mason <clm@fb.com> wrote: > > Originally I was worried about the latency impact of holding the > plugs over more than one super with high end flash. I just didn't want > to hold onto the IO for longer than we had to. > > But, since this isn't really latency sensitive anyway, if we find we're > not keeping the flash pipelines full the right answer is to short > circuit the plugging in general. I'd agree actual throughput should be > the same.
Yeah, this only triggers for system-wide writeback, so I don't seer that it should be latency-sensitive at that level, afaik.
But hey, it's IO, and I've been surprised by magic pattern sensitivites before...
Linus
| |